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I don't know any dealer who puts in Mobil 1 unless you pay extra $$$ for it.

I supply my own Mobil 1 and I get $100 off the service for supplying my own oil. I stock up when it's cheap, so my current M1 stock cost me $10/litre, so I get fully synthetic in the car for $76, yet they credit me $100 for not supplying their semi synthetic bulk oil

I asked for Mobil 1 last service but my dealer told me it was too thin and they havenít used it for years in any HSV, so I just went with their standard ďHSV serviceĒ. I honestly donít know who to believe anymore!

What plugs do you guys recommend?
In reference to Kirks comment on the oil thickness, itís something I have always questioned. OZ is generally a very warm place, especially over here in the West. Iíll have to ask the dealer if warranty is affected by changing. I have been thinking of going Royal Purple. I used to run it in my LS1ís.
As for the intervals, I changed mine at 800kís, 2000, 5300 and 10k. Just ticked over 14k.

I don't know any dealer who puts in Mobil 1 unless you pay extra $$$ for it.

I supply my own Mobil 1 and I get $100 off the service for supplying my own oil. I stock up when it's cheap, so my current M1 stock cost me $10/litre, so I get fully synthetic in the car for $76, yet they credit me $100 for not supplying their semi synthetic bulk oil

Thanks for that Voodoo, I didn't know.
Haven't taken delivery yet, so I will ask upon pick up.
Pickles.

Still comes back to if you’re beating on the car like some of us are then you have to change the oil more often.
If you just commute in the car then you’ll be fine with the manufacturers recommendations, however it’s also not a bad idea to check your oil level during the 10,000-15,000km service intervals and top up the oil if it’s needed.

Most people don’t check their oil and top it up, this is a bad habit even if just daily driving.

i always run my engine to operating temps and oil temps then shut off and check oil level and fill to suit, then u will notice when dead cold it sits about 5mm above the full mark, its good to account for oil sitting within the engine and also any oil coolers/lines ect